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Enhancement of Security and QoS in Wireless Medical Sensor Networks
Sathya Duraisamy,Pranavi Krishnasamy,Jeena Jacaob Israel,Jagadeesan Duraisamy 한국정보과학회 2020 Journal of Computing Science and Engineering Vol.14 No.2
Wireless medical sensor networks (WMSN) collect the data of a patient’s vital body parameters using wearable or nonwearable biosensors. Since WMSN is wireless in nature there occur numerous issues like a false alarm, lack of robustness, and low processor speed, which reduce the system’s effectiveness. One of the major issues is the security and privacy protection of the collected data and providing a greater Quality of Service (QoS) for the network in terms of energy efficiency, standardization, etc. Targeting these problems, we introduced a hybrid secure and fuzzy fusion system to achieve efficient secure transmission and data fusion in WMSN. The basic idea of the proposed method is to generate a private key from specific features of the digital color image; the generated key is encrypted by the Advanced Encryption Standards (AES) mechanism. The proposed system handles the vague and imprecise data to reduce energy consumption and increases the network lifetime. The inference results verify the efficiency of the proposed method in terms of security and energy consumption of the network.
Duraisamy Kalpana,이양수,Krishnamoorthy Srikanth,PB Tirupathi Pichiah,차연수 한국고분자학회 2014 Macromolecular Research Vol.22 No.5
The cultural filtrates of Klebsiella pneumoniae cultured under normal gravity and low shear modeledmicrogravity were potentially used to biosynthesize gold nanoparticles using the precursor gold III chloride trihydrate. The gold nanoparticles produced were spherical, of size between 16-36 and 24-50 nm with the cultural filtratesof normal and low shear modeled microgravity respectively. The characteristic plasmon resonance of gold nanoparticlesoccurred between 535-550 nm in the spectral analysis. XRD reflections (1 1 1), (2 0 0), (2 2 0), (3 1 1) indicatethe face centered cubic and crystalline nature of the biosynthesized gold nanoparticles. The FTIR study proposesthat proteins excreted into the cultural filtrate were involved in the synthesis and stabilization of gold nanoparticles. The in vitro cytotoxicity on 3T3L1, H9c2 and HepG2 cell lines showed the nontoxic and biocompatible nature ofbiosynthesized gold nanoparticles.
( Duraisamy Kalpana ),( Hyo Jung Cha ),( Moon Ki Park ),( Yang Soo Lee ) 한국환경과학회 2012 한국환경과학회지 Vol.21 No.3
Spaceflights results in the reduction of immune status of human beings and increase in the virulence of microorganisms, especially gram negative bacteria. The growth of Klebsiella pneumoniae is enhanced by catecholamines and during spaceflight, elevation in the levels of cortisols occurs. So it is necessary to know the changes in physiology, virulence, antibiotic resistance and gene expression of K. pneumoniae under microgravity conditions. The present study was undertaken to study effect of simulated microgravity on growth, morphology, antibiotic resistance and cross stress resistance of K. pneumoniae to various stresses. The susceptibility of simulated microgravity grown K. pneumoniae to ampicillin, penicillin, streptomycin, kanamycin, hygromycin and rifampicin were evaluated. The growth of bacteria was found to be fast compared with normal gravity grown bacteria and no significant changes in the antibiotic resistance were found. The bacteria cultured under microgravity conferred cross stress resistance to acid, temperature and osmotic stress higher than the normal gravity cultured bacteria but the vice versa was found in case of oxidative stress.
Duraisamy, Raghu,Rathinasamy, Sakthi Ambothi,Natesan, Senthil,Muthurajan, Raveendran,Ramineni, Jana Jeevan,Karuppusamy, Nageswari,Lakshmanan, Pugalenthi,Chokkappan, Mohan,Gandhi, Karthikeyan 한국작물학회 2011 Journal of crop science and biotechnology Vol.14 No.3
Cassava, family Euphorbiaceae, is the fifth most important staple food crop. The study of variability and diversity present in diverse cassava accessions maintained at the field genebank of TCRS, TNAU is essential to design the breeding program of cassava in TNAU. Hence, a study was carried out to assess the genetic diversity based on morphological traits and Simple Sequence Repeat (SSR) markers, identifying the SSR markers linked to a cassava mosaic disease-resistant QTL region. Genetic diversity among cassava germplasm accessions was estimated using 28 morphological traits and three SSR markers. The polymorphic information content (PIC) result gives high information for all the SSR markers. Morphological traits revealed 10 clusters and the SSR markers revealed 13 clusters at a similarity coefficient of 2.514 and 0.75, respectively. The SSR marker diversity revealed that the most promising clusters (II and XII) possessing accessions with yield attributing traits and cluster IX were grouped together due to low yield and CMD susceptibility. Morphological descriptors revealed variance for yield contributing traits. The first three principle components accounted for 10.8, 9.1, and 8.4%, respectively. Correlation studies showed significant correlation among yield and yield-attributing traits, which in turn influences yield. The morphological traits diversity reveals that cluster VI was the most promising cluster in which genotypes ME209 and ME460 possess higher yield and starch content with cassava mosaic disease (CMD) resistance. Most of the accessions grouped under cluster X belong to selection from International Centre for Tropical Agriculture (CIAT) collections and the cultivars under clusters I and II were true cassava seed (TCS) selections of India. The CMD-linked SSR marker which is reported in the previous studies have generated eight alleles and each were regressed with CMD resistance and resulted in non-significant linkage to CMD resistance
DURAISAMI DHAMODHAR-AN,박철웅,Pradnya N.P. Ghoderao,변헌수 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.110 No.-
The main aim of the current study is to understand of solubility curve in solvents at supercritical conditionsand including thermodynamics modeling, as well as van der Waals-type models. A thermodynamicapproach was commissioned to predict the solubility of a model alkyl oleate monomers in supercriticalcarbon dioxide (Sc-CO2). Furthermore, the experimental data of phase equilibrium were employed herewhich are based on measuring the solubility of alkyl oleate monomers in CO2 at supercritical conditions,and the experiments were performed using common synthetic-type method. The thermodynamic equilibriumproperties for the two-component mixture of ethyl oleate, propyl oleate and butyl oleate in Sc-CO2 were reported. Bubble (dew)-point data determinations were performed through the syntheticmethod from various temperatures T= (313.2 to 393.2) K and pressures p = (3.07 to 31.71) MPa. Theobtained results indicated that the phase equilibria of Sc-CO2 were found to increase monotonically withthe augmented of system temperatures and mole fraction of (ethyl oleate, propyl oleate and butyl oleate)in binary (solute + solvent) mixtures. The solubility curve of ethyl oleate, propyl oleate, and butyl oleatein the ethyl oleate + Sc-CO2, propyl oleate + Sc-CO2, and butyl oleate + Sc-CO2 models rises as the temperatureraises at a persistent pressure. The ethyl oleate + Sc-CO2, propyl oleate + Sc-CO2, and butyloleate + Sc-CO2 models show type-I phase behavior. Moreover, laboratory investigated results of thesesystems were adequately compared with the P-R EOS. RMSD for the ethyl oleate + Sc-CO2 [jij = 0.060,gij=-0.030], propyl oleate + Sc-CO2 [jij = 0.062, gij=-0.030], and butyl oleate + Sc-CO2 [jij = 0.061,gij=-0.030] models using 2 factors determined at 353.2 K were 4.06 %, 7.43 %, and 5.06 % correspondingly. Also, RMSD of ethyl oleate + Sc-CO2, propyl oleate + Sc-CO2, and butyl oleate + Sc-CO2 systems predicted byadjusted factors at each temperature was 8.46 %, 9.43 %, and 6.29 %, respectively.
A review on graphene oxide effect in energy storage devices
DURAISAMI DHAMODHAR-AN,Pradnya Prabhakar Ghoderao,Veeman Dhinakaran,Suhail Mubarak,Nidhin Divakaran,Hun-Soo Byun 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.106 No.-
This article contributes a broad analysis of the latest improvement on energy storage operations usingsingle layer surface modified graphene oxide (GO). GO, a thin structure of graphite oxide, is a modifiedgraphene, holding several oxygen-casing functional groups. This provides GO with numerous distinctivefeatures for multipurpose applications in capacitors, fuel cells and batteries. Precise applications are distinguishedprimarily comprising use in electrodes as the dynamic substantial’s to augment the recital oras substrates to discriminate the configurations, in solid-state solution and membranes techniques toadvance the ionic attraction and other behaviors, and in internal structure layers to guard the currentcollectors, membranes or electrodes. Additionally, the problems, difficulties and looming overlooks areconferred in the article for promising promotes research development of GO applications.
Carbon nanodots: Synthesis, mechanisms for bio-electrical applications
DURAISAMI DHAMODHAR-AN,Hun-Soo Byun,M. Varsha Shree,Dhinakaran Veeman,L. Natrayan,B. Stalin 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.110 No.-
Due to the exceptional optical properties such as biocompatibility, and low toxicity, carbon nanodots(CNDs) have emerged as a potential material for biosensing, drug delivery, and bioimaging. As a result,CNDs preparation, properties, and applications have sparked much attention. Its advantages include greatbiocompatibility in vitro and in vivo, photobleaching resistance, ease of surface functionalization and bioconjugation,excellent colloidal stability, environmentally safe manufacturing, and low cost. This allowedCNDs to replace traditional fluorescent heavy metal-containing semiconductor quantum dots or organicdyes. CNDs have demonstrated a wide range of applications, despite the fact that the mechanism of theirphotoluminescence remains a mystery. In this review, we examine current advancements in the field ofCNDs and provide a complete overview of their synthesis techniques and emission processes along withtheir applications in biosensing, drug delivery, bioimaging, wound healing, and disease detectionbiosensors.